Last modified on Thu 29 Apr 2021 10.52 EDT
It was bought by the National Gallery in the 1820s as a painting by Nicolas Poussin, the 17th-century French master. But The Triumph of Silenus â a bacchanalian revel â has long been relegated to the storerooms, having been repeatedly rejected by some of the 20th-centuryâs foremost experts as a mere copy.
Now doubts about the picture have been dispelled and it will hang in the main galleries with a new label bearing Poussinâs name.
It will also receive pride of place in a forthcoming Poussin exhibition organised by the National Gallery in London and the Getty Museum in Los Angeles.